求解答并解决flake8的问题

问题遇到的现象和发生背景

用VsCode编辑代码，flake8并无报错，运行也正常。但是把代码文件保存到桌面文件夹里，再重新打开，就flake8就提示很多错误，但是代码也能正常运行。

问题相关代码，请勿粘贴截图

from enum import Enum

class Direction(Enum):
LONG = "buy"
SHORT = "sell"
order_direction = Direction.LONG

class Offset(Enum):
OPEN = "on"
CLOSE = "off"
CLOSE_TODAY = "off_today"
CLOSE_YESTERDAY = "off_yestoday"

def send_order(
vt_symbol: str,
price: float,
volume: int,
direction: Direction,
offset: Offset
) -> str:
pass

class TradeData:
vt_symbol: str = "",
price: float = 0.0,
volume: int = 0,
direction: Direction = None,
offset: Offset = None

direction = Direction.LONG
print(direction)
direction_value = direction.value
print(direction_value)

运行结果及报错内容

我的解答思路和尝试过的方法

卸载VsCode重新安装，

我想要达到的结果

代码的缩进都按规范来的，代码没有问题。但是flake8的提示肯定是有问题的，如何解决？

试试在定义函数，的上面在加一个空行，
语法规定希望隔两个空行，你却只有一个